Polikarpov DI-1

DI-1 (2I-N1)
Role Fighter
National origin Soviet Union
Manufacturer Polikarpov
Designer Nikolai Nikolaevich Polikarpov
First flight 12 January 1926
Status Cancelled
Number built 1

The Polikarpov DI-1 (DI - Dvukhmesnyy Istrebitel - two-seat fighter), also known as 2I-N1, Russian: Поликарпов ДИ-1 (2И-Н1), was a prototype Soviet two-seat fighter designed during the 1920s. The sole prototype built crashed on its ninth flight, due to manufacturing defects, and the program was cancelled.

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